Podman : Podman Network2023/06/21 |
This is the basic usage to configure Podman Network.
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[1] | When running containers without specifying network, default [podman] network is assigned. |
# display network list root@dlp:~# podman network ls NETWORK ID NAME DRIVER 2f259bab93aa podman bridge # display details of [podman] root@dlp:~# podman network inspect podman [ { "name": "podman", "id": "2f259bab93aaaaa2542ba43ef33eb990d0999ee1b9924b557b7be53c0b7a1bb9", "driver": "bridge", "network_interface": "podman0", "created": "2023-06-20T19:10:54.257475042-05:00", "subnets": [ { "subnet": "10.88.0.0/16", "gateway": "10.88.0.1" } ], "ipv6_enabled": false, "internal": false, "dns_enabled": false, "ipam_options": { "driver": "host-local" } } ] # [podman] is assigned as container network by default root@dlp:~# podman run debian /bin/bash -c "apt-get update; apt-get -y install iproute2; ip route" ..... ..... default via 10.88.0.1 dev eth0 proto static metric 100 10.88.0.0/16 dev eth0 proto kernel scope link src 10.88.0.20root@dlp:~# podman commit $(podman ps -a | tail -1 | awk '{print $1}') srv.world/iproute |
[2] | If you'd like to assign another network, configure like follows. |
# create network [network01] with [192.168.100.0/24] subnet root@dlp:~# podman network create --subnet 192.168.100.0/24 network01 /etc/cni/net.d/network01.conflist podman network ls NETWORK ID NAME DRIVER e6937d4a3327 network01 bridge 2f259bab93aa podman bridge # run a container with specifying [network01] root@dlp:~# podman run --network network01 srv.world/iproute /bin/bash -c "ip route" default via 192.168.100.1 dev eth0 proto static metric 100 192.168.100.0/24 dev eth0 proto kernel scope link src 192.168.100.2 # to attach the network to existing running container, set like follows root@dlp:~# podman ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 2706c69c65a5 srv.world/debian-apache2:latest /usr/sbin/apachec... 6 seconds ago Up 7 seconds ago 0.0.0.0:8081->80/tcp funny_ardinghelliroot@dlp:~# podman exec 2706c69c65a5 /bin/bash -c "ip route" default via 10.88.0.1 dev eth0 proto static metric 100 10.88.0.0/16 dev eth0 proto kernel scope link src 10.88.0.21 # attach network to specify an IP address in the subnet root@dlp:~# podman network connect network01 2706c69c65a5
podman exec 2706c69c65a5 ip route default via 192.168.100.1 dev eth1 proto static metric 100 default via 10.88.0.1 dev eth0 proto static metric 100 10.88.0.0/16 dev eth0 proto kernel scope link src 10.88.0.21 192.168.100.0/24 dev eth1 proto kernel scope link src 192.168.100.3 # to disconnect the network, set like follows root@dlp:~# podman network disconnect network01 2706c69c65a5 root@dlp:~# podman exec 2706c69c65a5 ip route default via 10.88.0.1 dev eth0 proto static metric 100 10.88.0.0/16 dev eth0 proto kernel scope link src 10.88.0.21 |
[3] | To remove podman networks, set like follows. |
root@dlp:~# podman network ls NETWORK ID NAME DRIVER e6937d4a3327 network01 bridge 2f259bab93aa podman bridge # remove [network01] root@dlp:~# podman network rm network01 Error: "network01" has associated containers with it. Use -f to forcibly delete containers and pods: network is being used # force remove containers with [-f] option root@dlp:~# podman network rm -f network01 network01 |
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